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Comparison of intravesical (Cohen) and extravesical (Lich-Gregoir) ureteroneocystostomy in the treatment of unilateral primary vesicoureteric reflux in children.

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INTRODUCTION Various intravesical and extravesical techniques have been described for the surgical correction of vesicoureteral reflux (VUR). Among those techniques Cohen (intra-vesical) and Lich-Gregoir (extra-vesical) are the most commonly used… Click to show full abstract

INTRODUCTION Various intravesical and extravesical techniques have been described for the surgical correction of vesicoureteral reflux (VUR). Among those techniques Cohen (intra-vesical) and Lich-Gregoir (extra-vesical) are the most commonly used ones. However, there are limited studies that compare those two surgical techniques in the literature. OBJECTIVE In this study, we aim to compare the outcomes of the open intravesical and extravesical procedures for unilateral primary VUR in children. METHODS We analyzed the records of 118 consecutive children with primary VUR who underwent open ureteral reimplantation surgery by single surgeon from January 2011 to October 2015 at our institution. Among them, intravesical reimplantation was group A, and extravesical reimplantation procedure was group B. We retrospectively analyzed the clinical data of both groups, including age, sex, preoperative reflux grade, presence of lower urinary tract symptoms (LUTS), operative time, postoperative complications and hospitalization period. Success of surgery was defined as the resolution of the VUR as determined by voiding cystourethrography 6 -12 months after surgery. All the parameters were statistically compared. RESULTS A total of 58 patients were found eligible for the study. In 23 cases intravesical (group A) and in 35 cases extravesical (group B) procedure were performed. The operative time in group A was significantly higher than group B (110.3±16.9 and 87±29.8 min, respectively, p = 0.002). The mean hospital stay was also longer in group A (2.8±0.8 and 1.2±0.6 days, respectively, p = 0.007). The ureteral catheterization periods were 14.1±6.1 days for group A and there was no ureteral catheter placement in group B. The success rate of the two groups were comparable (100% vs 94.9%, p = 0.513). No intraoperative complications were detected in either group. The number of febrile urinary tract infections were similar between the groups after a mean follow up of 18.2 months (p = 0.746). DISCUSSION Our results confirmed that both Cohen and Lich-Gregoir procedures had equivalent success and complication rates. Lich-Gregoir technique was found superior to Cohen technique in terms of hospital stay and operative time. Moreover, it avoids the necessity of urethral and ureteral stenting which probably might increase the comfort of the patients postoperatively. The main limitations of our study are unrecorded pain scores and amount of analgesics taken the after surgery and retrospective analysis of the data. CONCLUSION Both the open intravesical and extravesical ureteroneocystostomy procedures are equally effective in the treatment of primary unilateral VUR. Any of the techniques can be opted by the surgeons depending on their surgical experience.

Keywords: reflux; lich gregoir; unilateral primary; group; vur

Journal Title: Journal of pediatric urology
Year Published: 2018

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